It has been awhile! Welcome back, and thanks for posting a new question!
Authors I miss... Jenna (though she did just start a new story recently), Sarah (starbeamz), Bianca, Susan, Jen (JJ), and Mare (as a fanfic author). These were all people who were/are friends of mine, as well as being authors of some of my favorite stories.
I am good about saving stories I really like so that I can reread them even if they get taken down, but there are a few stories I've lost along the way. The one I most wish I could reread is "Lost Innocence," the third story in the Nick and Lizz Series by Jenna and Auctor. The other stories are still available, but that one is just completely gone, so it's like there's a hole in the series. Another one that comes to mind is a story called "Saving Grace" that was on a website called Wiggycool's Hangout back in like 1999. It was one of the early fanfics I read, and it wasn't finished; then the site went down, and I could never find the story again. It probably wasn't really that good, judging by some of the other stories I liked back then LOL, but I would still like to be able to read it again for nostalgia's sake.